DOI QR코드

DOI QR Code

Comparison of Allowable Axial Stress Provisions of Cylindrical Liquid Storage Tanks under Seismic Excitation

지진 하중을 받는 원통형 플랜트 탱크 구조물의 축방향 허용압축응력 설계기준 비교 연구

  • Oh, Chang Kook (School of Civil and Environmental Engineering, Kookmin University) ;
  • Lee, So Ri (School of Civil and Environmental Engineering, Kookmin University) ;
  • Park, Jang Ho (Dept. of Civil System Engineering, Ajou University) ;
  • Bae, Doobyong (School of Civil and Environmental Engineering, Kookmin University)
  • 오창국 (국민대학교, 건설시스템공학부) ;
  • 이소리 (국민대학교, 건설시스템공학부) ;
  • 박장호 (아주대학교, 건설시스템공학과) ;
  • 배두병 (국민대학교, 건설시스템공학부)
  • Received : 2016.06.25
  • Accepted : 2016.07.18
  • Published : 2016.08.27

Abstract

Stability of cylindrical liquid storage tanks under seismic excitation could prevent catastrophic disaster of human life and economic loss. Domestic provisions on allowable compressive stress in tank walls to prohibit buckling failure are either incomplete or inconsistent, so foreign specifications such as API 650, BS EN 1998-4:2006 or New Zealand Standards are employed in stability design. In this study, response spectrum analyses are performed for plant tanks having different ratios of height to diameter or diameter to thickness to calculate hydrodynamic pressure on tank walls. Then nonlinear buckling analyses are conducted to estimate magnitude of buckling stress. By comparing analysis results with those from foreign design specifications, appropriate domestic design provisions are suggested.

건플랜트 내부의 주요 시설물인 원통형 액체저장탱크에 지진 하중이 작용하면 탱크 벽체에 좌굴이 발생하여 큰 손실을 초래할 수 있다. 탱크 구조물 설계시 좌굴에 대한 허용응력을 규정한 국내 기준은 일관성이 부족하고 근거가 미약하여 주로 국외의 API 650, BS EN 1998-4:2006, 뉴질랜드 기준 등을 차용하고 있다. 본 연구에서는 서로 다른 형상 비를 갖는 탱크 구조물에 대해 응답스펙트럼해석을 수행하여 유체 동압력을 산정한 후 재료 및 기하비선형을 고려한 비선형 좌굴해석을 수행하여 축방향 허용좌굴응력을 산정하고 국외 기준과의 비교를 통해 적절한 국내 기준을 제안하였다.

Keywords

References

  1. Manos, G.C. (1985) Tank Damage During the May 1983 Coalinga Earthquake, Earthquake Engineering & Structural Dynamics, 13, pp.449-466. https://doi.org/10.1002/eqe.4290130403
  2. Manos, G.C., Shibata, H., and Shigeta, T. (1989) Correlation of Cylindrical Tank Wall Buckling with an Earthquake Motion Recorded at a Small Distance From the Tank, Earthquake Engineering & Structural Dynamics, 18, pp. 169-184. https://doi.org/10.1002/eqe.4290180204
  3. Manos, G.C., Shibata, H., and Shigeta, T. (1989) Correlation of Cylindrical Tank wall Buckling with an Earthquake Motion Recorded at a Small Distance From the Tank, Earthquake Engineering & Structural Dynamics, 18, pp. 169-184. https://doi.org/10.1002/eqe.4290180204
  4. 김승억, 최동호, 이동원(2000) 지진 하중을 받는 유체저장탱크 거동 연구에 대한 고찰, 대한토목학회논문집, 대한토목학회, 제20권, 제4-A호, pp.607-619. Kim, S.E., Choi, D.H., and Lee, D.W. (2000) State of the Art Review on Behavior of Liquid Storage Tanks Subjected to Earthquake Load, Journal of Korean Society of Civil Engineers, KSCE, Vol.20, No.4-A, pp.607-619 (in Korean).
  5. Housner, G.W. (1963) The Dynamic Behavior of Water tanks, Bulletin of the Seismological Society of America, Vol.53, No.2, pp.381-389.
  6. Veletsos, A.S. and Yang, J.Y. (1977) Earthquake Response of Liquid Storage Tanks Advances in Civil Engineering Through Mechanics, Proc. of the 2nd Engineering Mechanics Specialty Conference, Raleigh(NC), U.S.A.
  7. Haroun, M.A. and Housner, G.W. (1981) Earthquake Response of Deformable Liquid Storage Tanks, Journal of Applied Mechanics, Vol. 48, No.2, pp.411-418. https://doi.org/10.1115/1.3157631
  8. Veletsos, A.S. (1984) Seismic Response and Design of Liquid Storage Tanks. Guidelines for the Seismic Design of Oil and Gas Pipeline Systems, Technical Council on Llifeline Earthquake Engineering, New York, U.S.A.
  9. Malhotra, P. and Veletsos, A.S. (1994) Uplifting Response of Unanchored Liquid Storage Tanks, Journal of Structural Engineering, Vol.120, No.12, pp.3525-3547. https://doi.org/10.1061/(ASCE)0733-9445(1994)120:12(3525)
  10. Natchigall, I., Gebbeken, N., and Urrutia-Galicia, J.L. (2003) On the Analysis of Vertical Circular Cylindrical Tanks Under Earthquake Excitation at its Base, Engineering Structures, Vol.25, pp.201-213. https://doi.org/10.1016/S0141-0296(02)00135-9
  11. Housner, G.W. and Haroun, M.A. (1978) Vibration Tests of Full-Scale Liquid Storage Tanks, Proc. of the 2nd U.S. National Conference on Earthquake Engineering, pp.137-145.
  12. Morita, H., Ito, T., Hamada, K., and Shirai, E. (2003) Investigation on Buckling Behavior of Cylindrical Liquid Storage Tanks Under Seismic Excitation, 2nd Report -Investigation on the Nonlinear Ovaling Vibration at the Upper Wall, ASME-PVP, Vol.466, pp.227-234.
  13. Maekawa, A., Suzuki, M., and Fujita, K. (2006) Nonlinear Vibration Response of a Cylindrical Water Storage Tank Caused by Coupling Effect Between Beam-Type Vibration and Oval-Type Vibration: Part 1 - Vibration Experiment, ASME-PVP, PVP2006- ICPVT-11-93261, pp.1-10.
  14. 소방방재청(2013) 위험물안전관리에 관한 세부기준, 소방방재청. NEMA (2013) Code for the Design of Tank with Dangerous Substances, National Emergency Management (in Korean).
  15. 한국표준협회(2006) KS B 6283:2006 액체저장탱크의 내풍압 및 내진에 대한 설계요건. KSA (2006) KS B 6283:2006 Design Requirements for Wind Load and Seismic Load of Oil Storage Tanks, Korean Standards Association (in Korean).
  16. API 650 (2012) Welded Tanks for Oil Storage API 650 12th, American Petroleum Institute, U.S.A.
  17. BS EN 1998-4:2006 (2006) Eurocode 8: Design of Structures for Earthquake Resistance - Part 4: Silos, Tanks and Pipelines, European Committee for Standardization.
  18. NZSEE (2009) Seismic Design of Storage Tanks: 2009, New Zealand Society for Earthquake Engineering.
  19. NZS(2004) New Zealand Standard Structural Design Actions - Part 5: Earthquake Actions, Council of Standards New Zealand.
  20. ANSYS (2013) ANSYS Mechanical APDL Element Reference, ANSYS Inc., P.A., U.S.A.
  21. US NRC (2014) Regulatory Guide 1.60: Design Response Spectra for Seismic Design of Nuclear Power Plants, U.S. Nuclear Regulatory Commission, U.S.A.
  22. Galambos, T.V. (1988) Guide to Stability Design Criteria for Metal Structures, John Wiley & Sons, New Jersey, U.S.A.

Cited by

  1. Fluid Pressure Response of Steel Water Tanks Accounting for the Effect of Vertical Ground Motion vol.32, pp.3, 2016, https://doi.org/10.7781/kjoss.2020.32.3.149